Matematika - 2

Question 4018a 20, 18, 16, 14, 12, ...., .....,.... What is the formula for this sequence? Solution 4018 1. 20, 18, 16, 14, 12, ...., .....,.... 2. a(1) = 20, a(2) = 18 = 20 - 2, a(3) = 16 = 18 - 2 = 20 - 2*2, a(4) = 14 - 2 = 20 - 3*2,--- 3. Therefore, a(n) = 20 - ( n - ...

Matematika - 1

Question 4001 My question is; If diameter of a circle is known - how do you find out what the circumference of a circle is? Solution 4001 Circumference = 2 × pi × R = pi × D D = Diameter Question 4003 how many nickels are there in $8.40? Sol...